Rims - Chop Or Stretch?

[JimmyRickard]

Found these rims in the classifieds and they are exactly what I'm after for my Calsonic 32 GTR replica:

Only problem is they are staggered sizes, 18x9 & 18x10, not sure what the offsets are either. I don't particularly mind if I chop the larger rims down to 18x9 or stretch the smaller rims upto 18x10, but the issue is that these rims are going to have a fairly hard life on the track so i want to make sure I'm not compromising the strength of the rim.

What are my options here?

[TM7GTR]

Definitely get the 18x9's re-barelled to 18x10's.

Google: White horse industries

[lidz]

Yeah just buy new inner or outer barrels for whichever pair you decide to change & rebuild them, pretty easy thing to sort since they're multi-piece. Have a bit of a google, plenty of online shops for buying the parts needed & shouldn't be overly expensive if your doing it yourself.

[pistol-pete]

New barrels will be just as if not stronger than the original ones

[JimmyRickard]

Is there anyone in Sydney who does it? Any idea of the cost?

What about the barrels will they be difficult to find for this particular rim?

[pistol-pete]

Dunno about in sydney but white horse are in melbourne and can custom build to suit

[pistol-pete]

Barrel Bros are in Sydney and could probably help you out

https://www.facebook.com/BarrelBros

[JimmyRickard]

Thanks pete I will have a chat with them

[JimmyRickard]

Spoke to Barrel Bros and they can definitely help. My only issue now is brake clearance at the front. According to the seller, the offset for the 9" is +27 and 10" is +32. The barrel bro said moving to 18x10 is definitely the way to go, but brake clearance will be an issue as I don't want to run spacers on a track car. I don't really understand all this offset business, so is there any way I can run decent sized brakes under these rims without running spacers?

Also, it appears the bigger rim has much deeper dish, will the rebarreling process move the face of the rim outward or only affect the lip? (sorry if that doesn't make sense?)

[pistol-pete]

As long as the centers have the same back spacing theyll be able to make up new inner and outer barrels to make them all the same width and offset. Have you got a pic of the back of the wheels? (both the 9j and 10j). Brake clearance is determined by two things, spoke design and the hub back spacing, changing offset by moving the center in the wheel has no effect. Judging by that first pic you posted the back of those wheels look pretty flat so spacers would be your only option (in my opinion).

Having said that, theres nothing wrong with spacers if theyre made of good quality material and you use hub centering rings. Plenty of people use them without issue.

[lidz]

The bigger problem your going to have with caliper clearance is the spoke design, not the offset. If you test fit them now & they don't clear the calipers then your out of luck. Rebuilding them will not change the distance from the back of the spokes to the mounting surface of the wheel.

[JimmyRickard]

Back of the rims: